Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NY40-J87 found under Stone Set Honing by Sunnen Products Company. The National Stock Number assigned to this part is 5345010541957, and the Federal Supply Class is 5345 Disks And Stones Abrasive. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NY40-J87.